Sickle-drive for harvesters.



C. QUESNELL.

SICKLE DRIVE FOR HARVESTERS.

APPLICATION mio MAR.15. 191e.

A TTOR/VEYS C. QUESNELL. slcKLE DRIVE -Foi: HARVESTERS. APPLICATIONFILED MAR, 15, |916.

1 ,200,983. Patented 00u10, 1916.

2 SHEETS-SHET 2.

NVENTOH A( ATTORNEYS ma Narrs PETERS cm. wAsHmc'raN. r.- c4

" fr Fries.

CORNELIS QUESNELL, OF PORTLAND, OREGON.

sicKLn-'nnivn non HARVESTERS.

and operation of parts are as hereinafterdescribed, and illustrated inthe accompanying drawings, in which;

Figure 1 is a plan view of my improved attachment combined with anordinary draper. Fig. 2 is a perspective view 0f the mechanismconstituting my invention.

1 indicates the shaft of the draper roller which is supported in boxingforming an attachment of the main frame of a thresher on which shaft thedraper frame 2 is adapted to swing or rotate. YThe shaft 1 is driven bya suitable sprocket connection with the thresher mechanism proper. Thesickle blade 3 is supported and adapted to reciprocate in a framepivoted at the lower or outer end of the draper frame 2, as indicated at4:.

A T-shaped arm or bracket 7 is riveted to each end of the sickle bladeand with their notched arms are detacliably connected straps 8, whichpass .over pulleys 9 jour-Y or clevis whose threaded ends passthroughboxings 10 applied, as best shown in Fig. 2, to the opposite endsof crank shaft 1. One

Copies of this patent may be obtained for Specification of LettersPatent.

Patented Oct. 10, 1916.

Application filed March 15, 1916. Serial No. 84,311.

terminal of said shaft is provided with a rigid crank l1, and thedriving sprocket wheel 12 keyed on the other end of the shaft vissimilarly provided with a wrist-pin 13,

and on these, namely, the crank and wristpin, the boXings 10 is secured.

As shown, nuts are applied to the ends of the loop or clevis 8a by whichineans'provision is made for stretching, or adjusting the tension of,the straps 8, as conditions require. rIhe crank 11 and wrist-pin 13 areset in diagonally opposite relation to each other, so that as the shaft1 is driven, the loops and straps will pull the sickle blade alternatelyin opposite directions, or in other words, reverse its stroke at eachhalf rotation of the shaft 1. The mechanism for effecting this reversalof the blade is light,

simple in construction, and eflicient in op-` eration, as well as easyto assemble and detach. Further, the flexibility of the strap connectionpractically "cushions the sickle n blade Vso that no jar or shock ornoise is produced as when chains are employed in place of straps. Itwill be seen that the length of the cutting blade exceeds the distancebetween tlie rollers 9 so that the grass is always cut in the path ofthe latter,

I claim: y

vIn a sickle-drive attachment of the type indicated, the combinationwith a reciprocable cutting blade, and a rotary shaft having cranks setopposite each other, of intermediate connecting devices consistingk ofU- shaped loops and iiexible straps, the loops having means foradjusting the tension of the straps, and pulleys on which thestraps run,as described.

ooRNELiUs oUEsNELL.

five cents each, by addressing` the Commssioner'of li'atents,V

Washington, 2D.v C.

